首先，介绍一下排名的依据。

● Quality Assessment（比重为40%）

Peer assessment score (0.25)

Educational professionals assessment score (0.15)

● Student Selectivity（比重为18%）

acceptance rate (0.06)

Mean GRE verbal scores (0.06)

Mean GRE quantitative scores (0.06)

● Faculty Resources（比重为12%）

Student-faculty ratio (0.045)

Percentage of faculty with awards (0.025)

Doctoral degrees granted (0.05)

● Research Activity（比重为30%）

Total research expenditures (0.15)

Average expenditures per faculty member (0.15)

根据此次排名，排名第一到第三的美国大学分别为：加州大学洛杉矶分校 (UCLA), 哈佛大学 (Harvard University), 威斯康辛大学麦迪逊分校 (University of Wisconsin-Madison).